About: http://webisa.webdatacommons.org/150480222

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Basically the idea is this: suppose you have two types of objects, Circle and Rect, and you want to check for a collision between two objects of any of those types.
http://www.w3.org/ns/prov#wasQuotedFrom	digitalmars.com